Some very valid criticism there, but it seems to assume the educators involved will be small-minded hacks who just want students to be compliant. I've had the misfortune to get to know some educators like that, but also many great teachers who genuinely use "grit" as a jumping off point to help students identify goals that are important to them and to then develop the ability to pursue that goal even if it is not the most fun thing to do sometimes.

For some students the satisfaction of sticking with a task through challenges and completing something difficult and meaningful is a revelation.

I don't think it's a bad thing to get high and play video games, but if that's the only way you know how to have fun you are missing out on something worthwhile.